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A
.gov website belongs to an official
government organization in the United States.
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Frames classified by quality scores: Frames from a 2500-frame video ranked based on the (a) HSV and (b) spatial frequency scores. Scores decrease from left to right and top to bottom. The frames in (c) are ranked by the convex combination (7) of the two scores, with υ = 0.3. The convex combination score balances crispness with coverage. Each collage shows frames with ranks 1 through 10. Images are best viewed on screen.
